Chapter 4: Fundamental Data Types
Primitive types includes
Four integer types and two floating-point types.
Objects and methods start with
a lowercase letter.
char
The character type, representing code units in the unicode encoding scheme.
double
The double precision floating point-type, about 15 significant decimal digits. 8 bytes.
long
The long integer type, with biggest range range. 8 bytes.
float
The single precision floating point type, about 7 significant decimal digits. 4 bytes.
Byte
The type describing a single byte, with range -128..127. size: 1 byte.
boolean
The type with the two truth values false and true. 1 bit.
All class in the java library start with
an uppercase letter.
Static method
do not operate on an object.
Java has how many primitive types?
eight.
Primitive types inculde
int, byte, short, long, double, float, char, and boolean.
Constant
is a final variable, once its value has been set, it cannot be changed.
short
the short integer ttpe, with range -32768...32767. 2 bytes,